Controller-regulator.



E. W. SUNDBERG.

*CONTROLLER REGULATOR. APPLICATION FILED JUNE 2Ifl9l6.

1,252,732; Patented Jan. 8,1918.

2 SHEETSSHEET I.

IIW-EIVTOH M 7 TOR/V E Y E. w. SUNDBERG.

comoum neeumqa. I APPLICATIQN 'HLED JUNE 21.1916. I I 1,252,732, Patented Jan..8,191'8.

-2 SHEETS-SHEET 2- Fig.2.

iwmz wt A rromvn Fig.3.

UNITED STATES PATENT TSSOURI, ASSIGNOR TO WAGiNER EIFCTRIO OUIS, MISSOURI, A CORPORATION OF MIS- EMANUEL w. SUNDBERG, or ST. LOUIS, M mANUrAerUnnve-oomPANY, or sit. L

SOURI.

BERG, a citizen of the United States of America, residing at the city of StyLouis, State of Missouri, have invented a certain new and useful Controller-Regulator, of which the following is such a full, clear, and exact description as -will enable any one skilled in the art to which it 'appertains to make and use the same, reterence being had to the accompanying drawings, Iorming' part of this specification.

rMy invention relates to a handle particu larly applicable as means for operating starting controllers for electric motors.

It is well known that whenstarting a motor it is usually desirable to allow the starter handle to dwell in at least one starting position for a certain time before mov- Ing it on to the next step,'and 1t 1s the object of my invention to provide means which will force the operator to stop for a short period of time as soon as he has brought the handle of a starter from the oli''to the starting position, thus giving the motor a chance to reach a suiiiciently high speed before the handle is moved to the next starting, or to the running, pos1- tion. 1

. Referring to the accompanying drawings, Figure l is a front elevation, and Fig. 2 is a side elevation of one'emboidiinent of my invention. Fig. 3 is a viewof the locking mechanism in the direction of arrow A of Fig. 2. Fig. 4 is a cross-section-on line 14;of Fig. 1. Fig.5 shows one relative position of parts of the lockingi'nechanism.

Fig. 6 is-a view of certain det'ai ls.

.heferring to the drawings, theclever 3 is keyed to the shaft 2 controlling the contact mechanism of the starting "switch, and

is provided with ahandle 4. This lever is shown in its ofl position in F ig. 1. If, it

is moved to the left,- through an angle of about'll degrees, the switching mechanism is placed in'the starting position (line 15).

When the handle 4: is moved in the same direction, through a further'angle "of 22 degrees, the switching mechanism occupies the running position (line 16). In order to prevent the operator from moving the lever 3 from the position 14 tothe position 16 without stopping at the mechanism now to be described is provided.

Specification of Letters Patent.

Application filed June 21, '191s. Serial No. 104,865.

United States of America,-,

is limited by an inner wall,

position 15, the

'. CONTROLLER-REGULATOR.

Pa e t Jai A pin or stop 7 attached to a lever 20 pivoted on the controller case 13*at 19 is arranged to enter a cavity 25 provided on the lever and best shown in Fig. 3. Said cavity contains a guiding pawl 8, best shown in, Fig. 6, pivoted on the screw 6 andunder the control of a spring 5 attached to the V lever3 at 12. This spring tends to hold the pawl in the position shown in Figs. 1, 3 and 5. The lever 3 is connected to the shaft 2, and it cannot bevmoved parallel thereto; and the pin 7 pivoted on the; stud l9 and movable to an extent limited by the shoulder 21, cannot move in adirection parallel to the axis ofsaid stud or of the shaft 2. The free end of the pin 7 can, therefore, never come into contact with the inner wall of the cavity 25 or with the facing 9 or the spring 5 of the pawl 8, but it does cooperate with the projection 10 of the pawl 8, as is best seen in'Figs. l'and 6; The cavity 25 side walls, a bottom Wall orsupporting flange, and an outer 'wall, the latter only, covering a very small part of the cavity, as shown in the portion of Fig. 3 indicated at 26. The side walls of the cavity 25 are provided with two openings 17 and 18 through which the pin 7 may enter or leave the cavity. The path which the pin 7 may take through said cavity depends on the direction in which the handle 4 is moved, and is controlled by the projection 10 of the pawl 8.

The operationof the device is as follows: When the handle is in the off position, as

shown in Figs..1 and 3, the pin 7 rests on the supporting flange 24 and lies in the neighborhood of the opening *17. As the operator moves the handle from position 14 .to position 15, the pin slides on the flange 24 until it strikes the projection 10 of the pawl 8, when it rides over, the back of said projection until it has reached the highest point thereof. If the operator continues to propel the'handle in the same direction, the

pin7 will ride. over the top of the pawl 8 weight, s'winging abontfthe stud 19. The 'paththe pin 7 can take under the influence of gravity when the'handle reaches-the po sition 15, is indicated in Fig. 5 by the arcs of circles 22 and 23, and itis seen that the.

pin will strike the outerwall of the cavity Shouldthe operator attempt to push the handle beyond the; position 15,even after having stopped there,it is clear that he will be prevented from doing so by the side-wall referred to which acts as a stop; He can only disengage or free the lever from the control of this pinby moving thehandle' back toward the-position 14 through a. small angle. This angle depends on theiconfiguv ration of said side-wall andv is increased when a shoulder, such as 27, is 'added. When the operator moves the handle back, the pin 7 still pivoting about the stud ,19, will drop within the cavity untilit reaches the bottom wall or flange 24 on lwhich fit will rest until the handle is againpushed in the direction of the running position 16, when'the-pin 7 will leave the cavity by the opening 18, and the lever '20; will come to rest oh the shoulder 21.

\Vhen returning the, handle to the ofl position, the pin 7 will be picked up as soon as the flange 24 of the cavity 25 comes into contact with said pin, and the latter will, ride on thisflange until it strikes the inside and lower part of the projection 10 of the pawl 8. The: movement of the handle -bein continued in the direction of' position 14, t e' pin 7 will force the pawl '8 out-of contact with the flange 24, pass under the nose ofthe pawl, and finally reach its original position, or that indicated in Figs 1 and 3, when. the pawl -will snap back into its original position under the influence of the spring 5.

Having fully described invention,

, what I claim as new and desire to secure by Letters Patent ofthe United States is:

1; The combination of a controller and operating lever therefor, a pivot-ally mounted element provided with a stop cooperating v with the lever, a guide adapted upon forextent.

ward movement of the lever to bring the stop into a position to limit said movement, and means preventing the release'of the le-- 'ver for further forward movement until same has been moved backward to a certain .2. The combination of a controller and operating lever therefor, a pivotallymounted element provided with'a stop cooperating "with thelever, a pivoted guideadapted upon forward movement of the lever to bring the stop into a position to limit said movement,

. and means causing said stop to pass under the pivoted guide upon the backward movement of the lever from a running position to its off position.

3. The combination of a controller and operating lever therefor,'a pivotally mount- 7 fed element provided with a stop, a flangeon the lever for supporting and guiding said stop, a' stop on the lever, apivoted guide having o'neend adjacent to said flange and ing lever, a controlling adapted to raise the pivotally mounted stop on thelever upon a short backward movement of said lever, and said flange and pivoted guide being so positioned relatively to each other that the pivotally mounted stop .will pass'over the pivoted guide when the lever is moved from off position to a running position and'under the guide when the lever is returned to off position.

4. The combination of a controller and operating' lever therefor provided with a stop, a controlling element carried on a stationary-pivot and provided with a stop'slidingly supported on the lever, means carried by said leverl f orlbringing said" stops into engagement the forward movement of the lever',"-'and' means preventing the disengagement "of-said stops except upon a short ackward movement of the lever.

5. The combination of a controller and operating lever therefor provided with a stop, a controlling member provided with a stop, means for bringing sald stops into enagement upon forw'ard'movement of the ever, said-means being adapted to pass underthe last mentioned stop during the movement of the lever in one direction and over, said stop during the movement in the opposite direction. 1

6. The combination of a controller operatmember provided with a sto coiiperatm with said lever, means on t e lever providing two passageways forth'e-stop,one of saidpassage-ways bein tortuous to prevent uninterrupted forwar runnin position and the. other passage-way being ree from means to interrupt the return movement of the lever.

7. The combination of a controller, an

operating lever therefor, a pivoted control-- lin lever provided with a stop, and a flange ivoted cam on the operating lever, both a apted to cooperate with the stop on the controllin lever. a

8. The com ination of a controller, an operating lever therefor, means controllin the movement thereof comprising a pivoted movement of the lever from .olf? to controlling leverprovided with a stop, a

flange on the operating lever for supporting and guiding the stop, and a cam carried by,

the operating lever adapted to raise the stop from the'flange and bring it into position upon the forward niovement of the lever to limit the motion thereof.

9. Thdi combination of a controller, an operating lever therefor provided with a. lvoted cam, a stop, and a flange extending eneath the cam and stop; a pivoted con trolling element provided with a stop adaptby contactwith the upper surface of said cam and brought into engagement with the stop on the lever upon the'ffor'ward movement of said lever to a predetermined ex-- tent; and means beneath the stop on the lever to support thexstop on the controlling element, said means and cam being positioned to provide a passage-way whereby the stop on the controlling element may. drop from engagement with said means. to the flange upon a short backward movement of the lever, and said flan 0 being positioned to guide the stop on t e controlling element 15.

under the pivoted cam upon movement of the lever from a running position to its off position.

In testimony whereof, I have hereunto set my handand aflixed my seal in the presence 20 of the two subscribing witnesses. I

v EMANUEL w. SUNDBERG. [n.5,] Witnesses:

' FAL.- 'A. FYNN, 'CHAS- H. WIMUJ'ER. 

